The Uranium-Vanadium Production History of the Monument No. 2 Site Monument Valley, Apache County, Arizona

Basic Information

Author:

Chenoweth, W.L.

Description:

The Monument No. 2 site consisted of a large open-pit mine, an upgrader, a concentrator and a
heap leaching operation. Ore from the mine as well as products from other operations were
shipped to mills for further processing and are included in the production totals.
Unpublished records of the U.S. Atomic Energy Commission (AEC) indicate the Monument No.
2 site produced more uranium during its procurement program (1947-1970) than any other mine
in the State of Arizona. Production tonnage in published records ranged from 773,132 tons in
Gregg and Evensen (1989) to 766,998 tons in Scarborough (1981). The purpose of this report is
to give a summary of the production history of the site and to present what is believed to be the
correct total as the result of researching existing records.